Relatively thin, collapsed, i.e. unexpanded, polymeric foam materials that, upon contact with aqueous body fluids, expand and absorb such fluids, are disclosed. A process for consistently obtaining such relatively thin, collapsed polymeric foam materials by polymerizing a specific type of water-in-oil...http://www.google.de/patents/US5652194?utm_source=gb-gplus-sharePatent US5652194 - Process for making thin-wet absorbent foam materials for aqueous body fluids
